A testcross is performed to determine if a specific individual is a carrier.The results generate a 50/50 ratio of phenotypes.The test subject is therefore ________.
A)heterozygous
B)homozygous dominant
C)homozygous recessive
D)heterozygous dominant

Question

Quizplus · Accepted Answer

A testcross involves crossing the individual in question with a homozygous recessive individual. A 50/50 phenotype ratio suggests that the test subject is heterozygous, as half the offspring show the dominant phenotype and half show the recessive phenotype.

A Testcross Is Performed to Determine If a Specific Individual